Windows 8.1において”0x0000004A” or “0x0000009F” エラーで停止が起こる : “0x0000004A” or “0x0000009F” Stop error occurs in Windows 8.1 : This issue occurs on a computer that is running Windows 8.1 if one of the following conditions is true: The computer is docked, and it uses local area network (LAN). Then, you undock the computer, and switch to Wi-Fi.
USB devices are connected. Power transitions, such as you wake the computer from sleep.

Win32k.sysの更新. フォント関連。Win32k.sys update in Windows: October 2015 : Removes the Touch Hardware Quality Assurance (THQA) certification verification check in the Win32k.sys driver in Windows 8.1. Font files remain open by the system, and can’t be deleted when they’re used in a call to CreateScalableFontResource in Windows Server 2012 R2.